10411 排気管直挿型NOxセンサによるガソリン車用三元触媒の劣化診断法(計測・診断) [in Japanese] 10411 Detection of Deteriorated Tree Way Catalyst by Thick Film ZrO2 NOx Sensor [in Japanese]
Access this Article
The object of this study is to investigate an on-board diagnostic method to detect the deterioration of a three-way catalyst under actual driving conditions. For this purpose, we analyzed the signal data, which consists of air-fuel ratio and NOx concentration, generated by two ZrO2 NOx sensors placed on upstream and downstream positions of the catalytic converter. As a result, we found that it is possible to detect deteriorated catalyst under actual driving conditions by using effectively airfuel ratio signals and NOx concentration signals of two NOx sensors placed on upstream and downstream positions of the catalytic converter.
- The Proceedings of Conference of Kanto Branch
The Proceedings of Conference of Kanto Branch 2005.11(0), 353-354, 2005
The Japan Society of Mechanical Engineers